"It begins with a fever. By the time the spots appear, it's too late: Morris's disease is loose on the world, and the bodies of the dead begin to pile high in the streets. When its terrible side consequences for the survivors become clear, something must be done, or the dying will never stop. For Dr. Isabella Gauley, whose niece was the first confirmed victim, the route forward is neither clear nor strictly ethical, but it may be the only way to save a world already in crisis. It may be the only way to atone for her part in everything that's happened."--Publisher's description.